HydroFast FAQ for Android water tracking, fasting, reminders, and progress

Yes. HydroFast is currently free to use on Android, with no purchase required for water tracking, fasting timers, reminders, or progress history.

An Android app that keeps two daily habits in one place: logging water and running intermittent fasting sessions. It also handles reminders, history, and progress views.

Yes, and only Android for now. That includes notifications, notification action buttons, and a home screen widget.

No. Water logging is one half of the app; intermittent fasting tracking is the other.

No. Alongside fasting there is water intake tracking, reminders, history, progress insights, streaks, achievements, and a wellness score.

Anyone on Android who is already tracking water or fasting and would rather not juggle two separate apps to do it.

It records water intake and fasting sessions side by side, which covers what most people mean by the term. It does not offer medical fasting advice or supervision.

Yes. Water logs and the fasting timer run independently, so you can keep drinking water and logging it during a fast.

Yes, and both feed the same history, charts, streaks, and home screen widget rather than living in separate silos.

Yes. 16:8 is one of the built-in plans, alongside 12:12, 14:10, 18:6, 20:4, OMAD, and a custom option.

Yes. Log against a daily goal using quick add buttons or a custom amount, and the app tracks the percentage completed and the running history.

There are four preset buttons: 100 ml, 200 ml, 250 ml, and 500 ml. Anything else goes in as a custom entry.

Yes. In HydroFast, open Settings, find Units, and choose oz. Water amounts use US fluid ounces, with 1 fl oz equal to about 29.57 mL. You can switch back to ml without changing the amount of water recorded in your history.

Choose oz under Settings > Units. Open Water, tap + Custom, enter 8 or 20 in Amount (oz), then tap Save Intake. Log only what you drank: half of a 32 US fl oz bottle is 16 oz. The 8.5 oz quick button records 250 mL, so use a custom entry for exactly 8 oz.

Yes. Saved entries can be corrected or removed, so a mistyped amount does not stay in your history.

Yes. The day view shows how much you have logged, how much is left, and the percentage of the goal reached, with longer trends under progress.

Yes. A session can be started, paused, resumed, and ended, and the timer reflects the current state.

Yes, as a preset. The other presets are 12:12, 14:10, 18:6, 20:4, and OMAD, and you can define your own.

Yes. Set your own fasting and eating hours; the app checks that the two windows add up to 24 hours before saving.

Yes. It shows elapsed time, remaining time, the current status, and when the eating window opens.

Yes. Pausing keeps the session open so you can resume it instead of starting over.

Yes. Before starting a session, select a fasting plan and choose Set custom start time. Pick the date and time when your fast began, then start the session. Future start times are not accepted. This sets a new session's start time; it does not edit an existing fast.

Yes. Completed sessions are kept, and you can review them as a chart, as total hours, or through the history filters.

Yes. Choose a repeating interval or set your own times, and reminders can adapt to how much you have already logged.

The Morning start reminder uses your profile's wake time and requires a saved fasting plan. The completion reminder follows the remaining time of an active fast. Enable fasting reminders and the individual reminder switches, and allow Android notifications. There is no separate custom fasting-start reminder time picker.

They are scheduled on the device as ordinary Android notifications, so no remote push service is involved.

HydroFast's Snooze 15 min action is for hydration reminders. Fasting notifications offer Start Fast and End Fast instead. Android may provide its own notification snooze control, depending on the device; that is separate from HydroFast's water-reminder action.

Yes. A Log water button on the reminder records the amount without opening the app.

Yes. Start Fast uses a saved fasting plan, and End Fast ends the current active or paused session. If no plan is saved, open HydroFast and choose one first. Receiving a notification does not itself start a fast; use an action or the app controls.

Yes. It shows your hydration summary and fasting status, with shortcuts for the actions you repeat most.

Add 250 mL (8.5 oz), start a fast with a saved plan, end an active fast, or open the app. Without a saved fasting plan, Choose Plan opens the app first.

One tap adds 250 mL, displayed as 8.5 oz when ounces are selected. This is a fixed shortcut. Open the app to enter a different amount or edit a saved water log.

Yes, when a fasting plan is saved. If no plan is selected, the widget shows Choose Plan and opens the app so you can select one. An active fast can also be ended from the widget.

Yes. The current fasting state is shown on the widget, so you can check it without opening the app.

Today, Week, and Month views, each with a hydration line chart, a fasting bar chart, completion stats, history, streaks, achievements, and the wellness score.

Yes. A line chart plots intake over the selected period, so patterns are easier to spot than in a list.

Yes. Fasting activity appears as a bar chart, with total hours for the period alongside it.

Yes. Hydration and fasting each have their own streak, there is a combined one, and badges mark longer milestones.

A simple daily score based on your hydration and fasting activity. It exists to make consistency visible, and it is not a medical measurement.

No. You complete a local profile setup, but do not create an account or sign in. Tracking data stays on your device. Sending a voluntary Help and Support request shares the information needed to handle that request.

Yes. Core water and fasting tracking works from data stored on your device, and reminders are scheduled locally. Downloading the app and sending a Help and Support request require internet access. There is no cloud sync or backup-and-restore feature.

No. It is a wellness and habit tracking app, and it does not provide medical advice, diagnosis, or treatment.

No. It records what you did and shows it back to you. It makes no promises about health outcomes, fasting results, or weight loss.